CN208498128U

CN208498128U - A kind of new energy wheel hub and disc brake hub and drum brake wheel hub that bolt is fixed

Info

Publication number: CN208498128U
Application number: CN201820147783.XU
Authority: CN
Inventors: 丁金花
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-29
Filing date: 2018-01-29
Publication date: 2019-02-15
Anticipated expiration: 2028-01-29

Abstract

The utility model belongs to the field of hub of electric vehicle, motorcycle, and in particular to a kind of new energy wheel hub and disc brake hub and drum brake wheel hub that bolt is fixed.Including wheel rim and the spoke being arranged on the inside of wheel rim, the center of spoke is provided with the through hole passed through for wheel shaft, and the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the wheel rim is steel ring；Connector is welded on the inside of wheel rim, the inner end of connector is fixed on the outer end of spoke by bolt assembly.The wheel rim of the utility model is steel ring, and spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the two is entirely different material, and normal means can not weld；The application has been independently arranged a connector, connector is fixedly connected by screw with spoke, due in the use process of wheel hub, the often nursing that needs repairing because of the damage of wheel rim, therefore being fixedly connected by screw, when convenient for later period maintenance, integral replacing wheel hub is not needed, it is only necessary to replace wheel rim.

Description

A kind of new energy wheel hub and disc brake hub and drum brake wheel hub that bolt is fixed

Technical field

The utility model belongs to the field of hub of electric vehicle, motorcycle, and in particular to a kind of new energy vehicle that bolt is fixed Wheel hub and disc brake hub and drum brake wheel hub.

Background technique

The wheel hub of existing electric vehicle, motorcycle and new energy vehicle (three-wheel or four-wheel car that are driven by electricity) is equipped with aluminium wheel Or iron tyre.Aluminium wheel uses casting integrated molding, higher cost.Iron tyre processing needs to form by wheel rim, disc punching press, intermediate sleeve Cylinder processing, disc brake hub also need disk brake to forge, and drum brake wheel hub also needs brake rim molding and integral solder, cleaning etc. cumbersome Technique, cost is lower relative to aluminium wheel, but aesthetics is poor.

In the case where market competition is more and more fierce, most wheel hub manufacturing enterprise gets a profit meagre, aluminium on iron tyre The project of wheel needs huge fund again and competition is same fierce；Therefore, applicant develops a kind of production cost and iron tyre is close, Degree handsome in appearance can be more beautiful than aluminium wheel new wheel hub.

Summary of the invention

The purpose of the utility model is to provide a kind of design is more reasonable, it is capable of fixed electronic of bolt of market application The wheel hub of vehicle, motorcycle and new energy vehicle.

Purpose of the utility model is realized as follows:

A kind of new energy wheel hub that bolt is fixed, including wheel rim and the spoke being arranged on the inside of wheel rim, the center of spoke It is provided with the through hole passed through for wheel shaft, the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, the wheel rim For steel ring；Connector is welded on the inside of wheel rim, the inner end of connector is fixed on the outer end of spoke by bolt assembly.

The outer end of the spoke forms the hole location passed through for bolt.

Several inserts are provided in the middle part of the spoke, inserts surrounds the through hole circumferentially.

The inserts periphery has been evenly arranged several gear teeth, and the embedding groove being axially arranged is formed between the two neighboring gear teeth.

The middle part of the inserts outside is circumferentially provided with fluting.

The moulding compound is SMC or PBT or BMC or PBT/PET mixture.

A kind of disc brake hub that bolt is fixed, including wheel rim and the spoke being arranged on the inside of wheel rim, the center setting of spoke There is axle mounting portion, the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the wheel rim is steel ring；Wheel rim Inside is welded with connector, and the inner end of connector is fixed on the outer end of spoke by bolt assembly；The axle mounting portion Center is provided with the through hole of installation axle, and the both ends of through hole are provided with bearing fixed seat；A left side for the axle mounting portion Side forms disc brake mounting base in conjunction with spoke on the right side of axle mounting portion.

The outer end of the spoke forms the hole location passed through for bolt.

The disc brake mounting base is: the right end of axle mounting portion is embedded in there are three above screw-jointing seat, and screw-jointing seat surrounds institute State through hole circumferentially, screw-jointing seat center is provided with internal thread hole.

Positioning convex platform is provided in the middle part of the disc brake mounting base, the contour area that screw-jointing seat surrounds is arranged in positioning convex platform In domain.

The bearing fixed seat is the insertion being inlaid in axle mounting portion, and the center of bearing fixed seat is provided with axis Hold mounting hole；The bearing fixed seat at the left and right both ends of axle mounting portion is two independent individuals, or, axle mounting portion left and right two The bearing fixed seat at end, which extends towards, is combined into a complete sleeve.

Axle mounting portion side wall between two neighboring screw-jointing seat is recessed inwardly to form inner fovea part, and it is described fixed that inner fovea part enters The region of position boss；The side wall of inner fovea part gradually extends outward from the right end of axle mounting portion to left end.

The circumference of the bearing fixed seat and/or screw-jointing seat is provided with the recessed of reinforcement and axle mounting portion bonding tightness Slot or protrusion.

The groove be arranged in bearing fixed seat or the seating face that is spirally connected several are axially grooved, or, the groove is The slot that circumnutates of bearing fixed seat or the seating face that is spirally connected is set.

The moulding compound is SMC or PBT or BMC or PBT/PET mixture.

A kind of drum brake wheel hub that bolt is fixed, including wheel rim and the spoke being arranged on the inside of wheel rim, the center setting of spoke There is brake rim, the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the wheel rim is steel ring；The inside of wheel rim It is welded with connector, the inner end of connector is fixed on the outer end of spoke by bolt assembly；The middle part of the brake rim forms There is axle mounting portion, is also equipped with quoit on brake rim inner wall；The center of axle mounting portion forms through hole, through hole two End is provided with bearing fixed seat.

The outer end of the spoke forms the hole location passed through for bolt.

The quoit is iron ring, iron ring peripheral distribution have several reinforce it is convex with the brake rim bonding tightness Item.

The circumference of the bearing fixed seat is provided with the groove or protrusion of reinforcement Yu axle mounting portion bonding tightness.

The groove be arranged in bearing fixed seat surface several are axially grooved, or, the groove is arranged in axis Hold the slot that circumnutates of fixed seating face.

The moulding compound is SMC or PBT or BMC or PBT/PET mixture.

The surface forming of the connector has more than one through-hole or more than one inner fovea part.

Compared with the prior art, the utility model has prominent and beneficial technical effects that:

The wheel rim of the utility model is steel ring, and spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the two is Entirely different material, normal means can not weld；It can not be used together in traditional wheel hub manufacture idea, the application It is independently arranged a connector, connector is fixedly connected by screw with spoke, due in the use process of wheel hub, often Can because wheel rim damage and the nursing that needs repairing, be fixedly connected by screw, when convenient for later period maintenance, be not required to Want integral replacing wheel hub, it is only necessary to replace wheel rim.

In addition, being welded in wheel rim compared to by connector, then wheel rim and connector entirety are integrally formed with spoke, this Application is placed in wheel rim first by connector in conjunction with spoke, then by spoke, welds two components, the present processes are more convenient for making It makes, it is easy to implement.

The design of decoration enables this product also to can satisfy part to the higher product of aesthetic.

When wheel rim is welded using steel plate, spoke and axle mounting portion are all made of moulding compound or engineering plastics one-pass molding, at This lower and design matches in excellence or beauty aluminium wheel, and than previous product, more texture is clearly demarcated, and handsome in appearance, design space is bigger, intensity substitution Previous iron tyre；The middle section of wheel hub uses the one-time formed mode of moulding compound, alleviates material cost in product cost, saves About resource is needed compared to traditional iron tyre by disc punching press, intermediate sleeve processing, disk brake forging and integral solder, cleaning etc. Cumbersome technique, cost advantage is obvious, need to only be pressed and molded and settle at one go, fundamentally improve the manufacturing process of wheel hub, newly Mode, new concept；Reaching iron tyre from product appearance or aluminium casts the exquisite moulding not made, product strength greatly promotes, Filled up between electric vehicle hub industry iron tyre and aluminium wheel, should low cost beautiful moulding again blank.

Detailed description of the invention

Fig. 1 is the wheel hub perspective view of the utility model new energy vehicle.

Fig. 2 is the wheel hub cross-sectional view of the utility model new energy vehicle.

Fig. 3 is the structure diagram of the inserts of the wheel hub of the utility model new energy vehicle.

Fig. 4 is the perspective view of the utility model disc brake hub.

Fig. 5 is the cross-sectional view of the utility model disc brake hub.

Fig. 6 is the structure diagram one of the utility model bearing mounting base.

Fig. 7 is the structure diagram two of the utility model bearing mounting base.

Fig. 8 is the structure diagram three of the utility model bearing mounting base.

Fig. 9 is the perspective view of the utility model drum brake wheel hub.

Figure 10 is the cross-sectional view of the utility model drum brake wheel hub.

Figure 11 is the steel ring structure schematic diagram of the utility model drum brake wheel hub.

Figure 12 is the structure diagram of the utility model connector.

Figure 13 is the screw-jointing seat of the utility model disc brake hub and the schematic layout pattern of bearing fixed seat.

Specific embodiment

The utility model is further described combined with specific embodiments below, referring to Fig. 1-Figure 13:

A kind of new energy wheel hub that bolt is fixed, including wheel rim 100 and the spoke 110 being arranged on the inside of wheel rim, spoke 110 center is provided with the through hole 111 passed through for wheel shaft, and the spoke 110 is using cast aluminium or moulding compound or engineering plastics one Body formed, the wheel rim 100 is steel ring (in wheel hub industry, the address of steel ring and iron ring is general mutually)；Wheel rim 100 it is interior Side is welded with connector 140, and the inner end of connector 140 is fixed on the outer end of spoke 110 by bolt assembly 150.

The outer end of the spoke forms the hole location passed through for bolt.

Several inserts 130 are provided on the spoke 110, inserts 130 surrounds the through hole 111 circumferentially.

130 periphery of inserts has been evenly arranged several gear teeth 131, and axial setting is formed between the two neighboring gear teeth 131 Embedding groove 132.

The middle part of 130 outside of inserts is circumferentially provided with fluting 133.

The moulding compound is SMC or PBT or BMC or PBT/PET mixture.

The surface forming of the connector 140 has more than one through-hole 141 or more than one inner fovea part, the spoke 110 cladding connectors 140 are simultaneously combined as a whole, can be with 141 two sides of connection through-hole during spoke 110 is pressed and molded, it is ensured that The bonding tightness and fastness of connector 140 and spoke 110.

A kind of disc brake hub that bolt is fixed, including wheel rim 200 and the spoke 210 being arranged on the inside of wheel rim 200, spoke 210 center is provided with axle mounting portion 220, and the spoke 210 is integrally formed using cast aluminium or moulding compound or engineering plastics, institute Stating wheel rim 200 is steel ring (in wheel hub industry, the address of steel ring and iron ring is general mutually)；The inside of wheel rim 200 is welded with Connector 250, connector 250 are fixed on the outer end of spoke 110 by bolt assembly 270.

The outer end of the spoke forms the hole location passed through for bolt.

The center of the axle mounting portion 220 is provided with the through hole 221 of installation axle, and the both ends of through hole 221 are all provided with It is equipped with bearing fixed seat 230；The left side of the axle mounting portion 220 is combined with spoke 210, the right side of axle mounting portion 220 at Type has disc brake mounting base 240.

The disc brake mounting base 240 is: the right end of axle mounting portion 220 is embedded, and there are three above screw-jointing seat 222, spiral shells Circumferentially around the through hole 221,222 center of screw-jointing seat is provided with internal thread hole 2221 to joint chair 222.Screw-jointing seat 222 It is to be embedded in advance during axle mounting portion 220 is pressed and molded, it is easy for installation.

The middle part of the disc brake mounting base 240 is provided with positioning convex platform 241, and positioning convex platform 241 is arranged in screw-jointing seat 222 In the contour region surrounded.

The bearing fixed seat 230 is the insertion being inlaid in axle mounting portion, the center of bearing fixed seat 230 It is provided with bearing mounting hole 231；Bearing fixed seat 230 is that the design of insertion can be divided into two kinds again: (1) axle mounting portion 220 The bearing fixed seat 230 at left and right both ends is two independent individuals, when the bearing fixed seat 230 at left and right both ends is two independences Individual when, the material of one end metal tube at middle part can be saved, save material to reduce production cost, but mold knot Structure is increasingly complex；(2) bearing fixed seat 230 at the left and right both ends of axle mounting portion 220, which extends towards, is combined into a complete set Tin, being provided in the middle part of sleeve prevents axially displaced annular groove, and axle mounting portion 220 is directly joined integrally with sleeve, eliminates The welding sequence of traditional handicraft can also reduce production cost.Two kinds of design methods of bearing fixed seat are required to lathe auxiliary Processing, by lathe in the central reaming processing of bearing fixed seat 230, refine goes out bearing mounting hole 235, in bearing mounting hole 235 Bearing 236 can be installed.The needs of bearing mounting hole 235 are arranged concentrically with wheel rim outer ring, so that it is guaranteed that tire will not beat.This reality It applies in example, the bearing fixed seat at the left and right both ends of axle mounting portion is two independent individuals.

220 side wall of axle mounting portion between two neighboring screw-jointing seat 222 is recessed inwardly to form inner fovea part 260, inner fovea part 260 enter the region of the positioning convex platform 241；The side wall of inner fovea part 260 from the right end of axle mounting portion 220 to left end gradually Extend outward.

The circumference of the bearing fixed seat 230 and/or screw-jointing seat 222 is provided with reinforcement and is tightly combined with axle mounting portion The groove or protrusion of degree.Groove or protrusion design so that the combination of bearing mounting base and axle mounting portion more closely.

The groove be arranged in 222 surface of bearing fixed seat 230 or screw-jointing seat several axially grooved 232, or, The groove is the slot 233 that circumnutates that bearing fixed seat or the seating face that is spirally connected is arranged in.It should be noted, ridden in electric vehicle or motorcycle In capable process, wheel rim is subject to the main component of road shocks power and complete vehicle weight, and when emergency stop, axle mounting portion is practical to be born Test be distortion power, the distortion power mutually deflected can be generated between axle mounting portion and bearing mounting base, it is axially grooved or bent Design around slot has further dispersed the distortion power between axle mounting portion and bearing mounting base, increases axle mounting portion and axis The forced area and bond area between mounting base are held, the whole service life is improved.

The surface forming of the connector 250 has more than one through-hole or more than one inner fovea part, the spoke 210 Cladding connector 250 is simultaneously combined as a whole, can be with connection through-hole two sides, it is ensured that connector during spoke 210 is pressed and molded 250 with the bonding tightness and fastness of spoke 210.

The moulding compound is SMC or PBT or BMC or PBT/PET mixture.

A kind of drum brake wheel hub that bolt is fixed, including wheel rim 300 and the spoke 310 being arranged on the inside of wheel rim 300, spoke 310 center is provided with brake rim 320, and the spoke 310 is integrally formed using cast aluminium or moulding compound or engineering plastics, the wheel Rim 300 is steel ring (in wheel hub industry, the address of steel ring and iron ring is general mutually)；The inside of wheel rim 300 is welded with connection Part 360, the inner end of connector 360 are fixed on the outer end of spoke 310 by bolt assembly 370.

The middle part of the brake rim 320 forms axle mounting portion 330, is also equipped with quoit on 320 inner wall of brake rim 340；The center of axle mounting portion 330 forms through hole 331, and 331 both ends of through hole are provided with bearing fixed seat 350.

The quoit 340 is iron ring, and iron ring peripheral distribution has several to reinforce and the brake rim bonding tightness Raised line 341.

The bearing fixed seat 350 is the insertion being inlaid in axle mounting portion, the center setting of bearing fixed seat There is bearing mounting hole 351；Wherein, bearing fixed seat 350 is that the design of insertion can be divided into two kinds again: (1) axle mounting portion The bearing fixed seat 350 at 330 left and right both ends is two independent individuals, when the bearing fixed seat 350 at left and right both ends is two When independent individual, the material of one end metal tube at middle part can be saved, saves material to reduce production cost, but mould Lamps structure is increasingly complex；(2) bearing fixed seat 350 at the left and right both ends of axle mounting portion 330, which extends towards, is combined into one completely Sleeve, being provided in the middle part of sleeve prevents axially displaced annular groove, and axle mounting portion 330 is directly joined integrally with sleeve, goes In addition to the welding sequence of traditional handicraft, production cost can also be reduced.

Two kinds of design methods of bearing fixed seat 350 are required to lathe secondary process, by lathe in bearing fixed seat 350 Central reaming processing, refine go out bearing mounting hole 351, can install bearing in bearing mounting hole 351.Bearing mounting hole 351 needs It to be arranged concentrically with 300 outer ring of wheel rim, so that it is guaranteed that tire will not beat.In the present embodiment, axle mounting portion 330 left and right two The bearing fixed seat at end is two independent individuals.

The circumference of the bearing fixed seat is provided with the groove or protrusion of reinforcement Yu axle mounting portion bonding tightness.It is recessed Slot or protrusion design so that the combination of bearing mounting base and axle mounting portion more closely.

The groove be arranged in bearing fixed seat surface several are axially grooved, or, the groove is arranged in axis Hold the slot that circumnutates (identical as the bearing fixed seat structure of disc brake hub above) of fixed seating face.It should be noted, electronic During vehicle or motorcycle are ridden, wheel rim is subject to the main component of road shocks power and complete vehicle weight, when emergency stop, axle peace The practical test born in dress portion is distortion power, and the distortion power mutually deflected can be generated between axle mounting portion and bearing mounting base, Axially grooved or the slot that circumnutates design has further dispersed the distortion power between axle mounting portion and bearing mounting base, increases vehicle Forced area and bond area between axis mounting portion and bearing mounting base, improve the whole service life.

The moulding compound is SMC or PBT or BMC or PBT/PET mixture.

The surface forming of the connector 360 has more than one through-hole or more than one inner fovea part, the spoke 310 Cladding connector 360 is simultaneously combined as a whole, can be with connection through-hole two sides, it is ensured that connector during spoke 310 is pressed and molded 360 with the bonding tightness and fastness of spoke 310.

For above-mentioned three kinds of wheel hubs, the moulding compound be SMC (i.e. sheet molding compound, primary raw material by SMC special yarn, no Saturated resin, low shrinkage additive, filler and various auxiliary agents composition) or PBT (i.e. polybutylene terephthalate (PBT) is to benzene The condensation polymer of dioctyl phthalate and 1,4-butanediol) or BMC (i.e. tubular molding compound is a kind of semidry method manufacture glass fiber reinforcement heat The molding intermediate materials of solidity product, by unsaturated polyester resin, lower shrinkage/low-contour additive, initiator, inner pattern releasing agent applicable, Mineral filler etc. is pre-mixed into paste, adds thickener, colorant etc., the glass fibre with different length, dedicated It is stirred in material kettle, carries out thickening, ultimately form the intermediary material of bulk, can be used for being molded and being molded), or PBT/PET mixture；

The present embodiment selects SMC.

Each wheel hub chooses 1 sample (sample number into spectrum 1-3), and the detection of multiple projects is carried out to it, obtains testing inspection It is reported as follows table 1:

Table 1: examining report

In the test examining report of this wheel hub, the 5th~8 code test parameter for wheel hub, this wheel hub is in radial impact In test, after impact test is carried out in accordance with regulations, the not damaged crackle of wheel, fracture and engaging portion loosen extremely, and tire pressure is being rushed It hits without being decreased obviously in rear 30S, the deflection at impact is much smaller than the 7mm of required standard；

In spin load fatigue test, 100,000 turns of rotary test under the torsional moment of 130N/M are not broken, deform Etc. states；

In radial load fatigue test, single-wheel radial load 180KG, rotary test under the conditions environmental of speed per hour 40KH/H 500000 turns, the states such as it is not broken, deforms；

In axial static pressure test, deflection is much smaller than defined deflection 3.5mm, performance under the pressure of 7980N It is excellent.

Moreover, this wheel hub is using molding one-pass molding, the advantage of cost under the overall situation that environmental requirement is increasingly stringenter It is extremely obvious, and can effectively avoid the waste of resource.

It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and Only illustrate the principles of the present invention described in specification, on the premise of not departing from the spirit and scope of the utility model, The utility model also has various changes and improvements, these changes and improvements both fall within the scope of the claimed invention It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. a kind of fixed new energy wheel hub of bolt, including wheel rim and the spoke being arranged on the inside of wheel rim, the center of spoke is set It is equipped with the through hole passed through for wheel shaft, which is characterized in that the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, The wheel rim is steel ring；Connector is welded on the inside of wheel rim, the inner end of connector is fixed on the outer of spoke by bolt assembly End.

2. a kind of fixed new energy wheel hub of bolt according to claim 1, which is characterized in that the outer end of the spoke Portion forms the hole location passed through for bolt.

3. a kind of fixed new energy wheel hub of bolt according to claim 1, which is characterized in that set in the middle part of the spoke Several inserts are equipped with, inserts surrounds the through hole circumferentially.

4. a kind of fixed new energy wheel hub of bolt according to claim 3, which is characterized in that the inserts periphery is equal It is even to be disposed with several gear teeth, the embedding groove being axially arranged is formed between the two neighboring gear teeth.

5. a kind of fixed new energy wheel hub of bolt according to claim 3, which is characterized in that the inserts outside Middle part be circumferentially provided with fluting.

6. a kind of fixed new energy wheel hub of bolt according to claim 1, which is characterized in that the moulding compound is SMC or PBT or BMC or PBT/PET mixture.

7. a kind of fixed disc brake hub of bolt, including wheel rim and the spoke being arranged on the inside of wheel rim, the center of spoke is provided with Axle mounting portion, which is characterized in that the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the wheel rim is steel Circle；Connector is welded on the inside of wheel rim, the inner end of connector is fixed on the outer end of spoke by bolt assembly；The axle The center of mounting portion is provided with the through hole of installation axle, and the both ends of through hole are provided with bearing fixed seat；The axle peace The left side in dress portion forms disc brake mounting base in conjunction with spoke on the right side of axle mounting portion.

8. a kind of fixed disc brake hub of bolt according to claim 7, which is characterized in that the disc brake mounting base is: The right end of axle mounting portion is embedded, and there are three above screw-jointing seats, and screw-jointing seat surrounds the through hole circumferentially, in screw-jointing seat Centre is provided with internal thread hole.

9. a kind of fixed disc brake hub of bolt according to claim 8, which is characterized in that the disc brake mounting base Middle part is provided with positioning convex platform, and positioning convex platform is arranged in the contour region that screw-jointing seat surrounds.

10. a kind of fixed disc brake hub of bolt according to claim 7, which is characterized in that the bearing fixed seat It is the insertion being inlaid in axle mounting portion, the center of bearing fixed seat is provided with bearing mounting hole；Axle mounting portion is left and right The bearing fixed seat at both ends is two independent individuals, or, the bearing fixed seat at the left and right both ends of axle mounting portion extends towards knot Synthesize a complete sleeve.

11. a kind of fixed disc brake hub of bolt according to claim 9, which is characterized in that two neighboring screw-jointing seat it Between axle mounting portion side wall be recessed inwardly to form inner fovea part, inner fovea part enter the positioning convex platform region；The side of inner fovea part Wall gradually extends outward from the right end of axle mounting portion to left end.

12. a kind of fixed disc brake hub of bolt according to claim 7, which is characterized in that the bearing fixed seat and/ Or the circumference of screw-jointing seat is provided with the groove or protrusion of reinforcement Yu axle mounting portion bonding tightness.

13. a kind of fixed disc brake hub of bolt as claimed in claim 12, which is characterized in that the groove is arranged in axis Several for holding fixing seat or the seating face that is spirally connected are axially grooved, or, the groove is arranged in bearing fixed seat or screw-jointing seat table The slot that circumnutates in face.

14. a kind of fixed disc brake hub of bolt as claimed in claim 13, which is characterized in that the moulding compound is SMC, or PBT or BMC or PBT/PET mixture.

15. a kind of fixed drum brake wheel hub of bolt, including wheel rim and the spoke being arranged on the inside of wheel rim, the center of spoke is provided with Brake rim, which is characterized in that the spoke is integrally formed using cast aluminium or moulding compound or engineering plastics, and the wheel rim is steel ring； Connector is welded on the inside of wheel rim, the inner end of connector is fixed on the outer end of spoke by bolt assembly；The brake rim Middle part form axle mounting portion, be also equipped with quoit on brake rim inner wall；The center of axle mounting portion forms perforation Hole, through hole both ends are provided with bearing fixed seat.

16. a kind of fixed drum brake wheel hub of bolt according to claim 15, which is characterized in that the quoit is iron Circle, iron ring peripheral distribution have several raised lines reinforced with the brake rim bonding tightness.

17. a kind of fixed drum brake wheel hub of bolt according to claim 15, which is characterized in that the bearing fixed seat It is the insertion being inlaid in axle mounting portion, the center of bearing fixed seat is provided with bearing mounting hole；Axle mounting portion is left and right The bearing fixed seat at both ends is two independent individuals, or, the bearing fixed seat at the left and right both ends of axle mounting portion extends towards knot Synthesize a complete sleeve.

18. a kind of fixed drum brake wheel hub of bolt according to claim 15, which is characterized in that the bearing fixed seat Circumference is provided with the groove or protrusion of reinforcement Yu axle mounting portion bonding tightness.

19. a kind of fixed drum brake wheel hub of bolt according to claim 16, which is characterized in that the groove is that setting exists Several of bearing fixed seat surface are axially grooved, or, the groove is the slot that circumnutates that bearing fixed seat surface is arranged in.

20. a kind of fixed drum brake wheel hub of bolt according to claim 15, which is characterized in that the moulding compound is SMC, Or PBT or BMC or PBT/PET mixture.

21. a kind of fixed drum brake wheel hub of bolt according to claim 15, which is characterized in that the surface of the connector Form more than one through-hole or more than one inner fovea part.